Re: A function to take the regexp-matched subsring directly

[Mattias Engdegård]

30 okt. 2022 kl. 23.07 skrev Stefan Monnier <monnier@iro.umontreal.ca>:

> The match-data is defined to be something very ephemeral, so it's OK for
> pure functions to clobber it.
> 
> Admittedly, here it doesn't just clobber it but sets it to a reliable
> value, so there's a high risk that someone will rely on that match-data,
> so better not mark it as pure, indeed, contrary to what I said earlier.

Wouldn't be pure anyway since string-match depends on case-fold-search.